Talvez deva tentar algumas variações de ortografia:
methyl complex » metal complex (Expandir a Pesquisa), method complex (Expandir a Pesquisa), methylase complex (Expandir a Pesquisa)
complex tian » complex than (Expandir a Pesquisa), complex trans (Expandir a Pesquisa), complex tidal (Expandir a Pesquisa)
combs union » como union (Expandir a Pesquisa)
nano carlos » cano carlos (Expandir a Pesquisa), nino carlos (Expandir a Pesquisa), nuno carlos (Expandir a Pesquisa)
carlos noa » carlos nodal (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa)
union net » union new (Expandir a Pesquisa), anion net (Expandir a Pesquisa), union nato (Expandir a Pesquisa)
tian ngoc » tran ngoc (Expandir a Pesquisa), tuan ngoc (Expandir a Pesquisa), tien ngoc (Expandir a Pesquisa)
nacl nano » nacl kno (Expandir a Pesquisa), nacl nabr (Expandir a Pesquisa)
7.5 nacl » 3.5 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa)
l combs » e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa), l comps (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Performing a fuzzy search may retrieve terms with similar spellings: (( j l combs union net ) OR ((( 5 methyl complex tian ngoc ) OR ( 7.5 nacl nano carlos noa ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j l combs union net ) OR ((( 5 methyl complex tian ngoc ) OR ( 7.5 nacl nano carlos noa ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combs union net ) OR ((( 5 methyl complex tian ngoc ) OR ( 7.5 nacl nano carlos noa ))))*.